The Digital Variable Load Voltmeter from Hangar 9 precisely simulates typical in-flight loads on a receiver battery and displays real time voltage so modelers can be sure they have plenty of power to fly. Modelers can simulate three different loads: .5A, 1A or 2A. All voltage information is clearly displayed on the unit’s digital LCD screen. It will measure voltage from as low as 3.5V to as high as 10V and is compatible with all popular 4- and 5-cell receiver packs.